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Folks:
 
A guy who's doing research on scuba diving accidents asked me a good one.
He wants to relate the number of scuba accidents in each U.S. state to the
length of their coastline.  We found the ocean and Great Lake shorelines, but
not other lake and river shoreline lengths.  Does any one know of a
source for these?   There are some ifs, ands and buts in this, I know (ie. you
can't scuba dive in all the possible lake and river locations), but still
anything yyou can point me to would be appreciated.
 
Thanks
Jim Coombs
Map Librarian
Southwest Missouri State University